DL 1407 then DL 1633 at Detroit
Raleigh-Durham → Detroit → Houston
Timetable, Detroit time
20:48DL 1407 from Raleigh-Durham at the gate
20:15DL 1633 to Houston leaves the gate
23 h 27 apart on the timetable, overnight
DL 1633 leaves 23 h 27 after DL 1407 arrives on the timetable: more than half a day, so not a connection we count.